Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 58 for “"Heat Pipe"”.
-
Heat pipe effect in porous medium
… permeability, thermal conductivity, specific heat, porosity, and tortuosity on heat pipe performance in the vicinity of the waste package were observed. Computer simulations were carried out using TOUGH code on a Cray YMP-2 supercomputer; None of the fracture parameters affected the heat pipe …
-
Heat pipe dehumidification for supermarket energy savings
This thesis examines the possibility of using a heat pipe installed in the air conditioning unit of a supermarket to increase the level of dehumidification of the inside air. This dehumidification is expected to reduce the energy consumption of the refrigeration system due to an improved efficiency …
-
Oscillating Heat Pipe Performance with Evaporator Section Modifications
… management devices, such as the extruded-fin heat sink, are incapable of maintaining the safe operating temperature range for current and future high heat flux cooling applications. A device that has the capability to meet this growing need is the oscillating heat pipe. Oscillating heat pipes …
-
Numerical and experimental investigation of composite heat pipe technology
Heat pipes are heat transport devices that pose very small thermal resistance to heat flow, even over relatively long transport paths. Utilizing two-phase heat transfer, they can transport heat from con fined spaces to remote heat sinks where more surface area might be readily available. This …
-
Thermal boundary conditions for heat pipe assisted crystal growth
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1999.
-
Thermal performance of a Nam-Ju nanostructured copper oscillating heat pipe
… management systems are necessary to combat high heat fluxes. Copper heat pipes, and oscillating heat pipes are devices commonly used in the electronics industry to remove high heat fluxes, safeguarding sensitive electronic components from thermal damage. The surface application of cupric oxide …
-
Design, fabrication, and characterization of a multi-condenser loop heat pipe
… was characterized for a multi-condenser loop heat pipe (LHP) capable of dissipating 1000 W. The LHP was designed for integration into a high performance aircooled heat sink to address thermal management challenges in advanced electronic systems. The multi-layer stack of condensers utilizes a …
-
Investigation of gravitational effects on the performance of variable conductance heat pipe.
A variable conductance heat pipe with a length to diameter ratio of 96 to 1 was designed and constructed. The performance characteristics of both the conventional and gas loaded variable conductance modes of operation were studied. Particular emphasis was placed upon investigating the gravitational …
-
Investigation of a novel solar photovoltaic/loop-heat-pipe heat pump system
… technologies by incorporating an innovative loop heat pipe (LHP) and a typical heat pump. In addition, a coated aluminium-alloy (Al-alloy) sheet replaces the conventional baseboard for the PV cells to improve heat exportation. As a result, this research has developed a novel solar PV/LHP heat pump …
-
Manufacturing and characterization of welded, sintered condensers for a loop heat pipe
… condensers, the low thermal resistance of loop heat pipes, and the increased dissipation rates with an integrated fan system, a high efficiency heat exchanger has been previously designed. The multiplecondenser loop heat pipe required reliably manufactured condensers, with specified internal …
-
Development of an air-cooled, loop-type heat pipe with multiple condensers
… to high performance computing systems. Heat pipes are capillary-pumped devices that take advantage of the latent heat of vaporization of a working fluid to achieve low thermal resistance (~0.1 °C/W), and have been of particular interest to address these thermal management needs for …
-
Design of parallel plate condensers with sintered wicks for a loop heat pipe
… design and integration of a blower and a compact heat exchanger, low thermal resistance and high efficiency heat transfer can be achieved. This device combines the increased surface area of a finned geometry with the isothermal heat transfer of a heat pipe and the low speed operation of integrated …
-
Design, Fabrication, and Experimental Investigation of an Additively Manufactured Flat Plate Heat Pipe
Heat pipes are passive heat transfer devices in which a working fluid is sealed inside a metal enclosure. Properly designed wick structures on the inner surface of the heat pipe are critical as the wick aids in the return of the condensed liquid from the cold end back to the hot end where the …
-
Development of a compensation chamber for use in a multiple condenser loop heat pipe
… many electronic devices is presently limited by heat dissipation rates. One potential solution lies in high-performance air-cooled heat exchangers like PHUMP, the multiple condenser loop heat pipe presented here. This device features a number of design improvements that lead to significant …
-
Novel Charging Station and Computational Modeling for High Thermal Conductivity Heat Pipe Thermal Ground Planes
… are planar, thin (thickness of 3 mm or less) heat pipes which use two-phase heat transfer. TGPs are innovative high-performance, integrated systems able to operate at a high power density with a reduced weight and temperature gradient. Moreover, being able to dissipate large amounts of heat, …
-
Cryogenic heat pipe for cooling high temperature superconductors with application to Electromagnetic Formation Flight Satellites
… the thermally conductive jacket and is used for heat extraction. Wrapped around the thermally conductive jacket is multilayer insulation which is used to reduce the heat load into the HTS coil. This thermal system has the ability to maintain constant temperature in the presence of a rapidly …
-
Finite Element Analysis of a Nuclear Pumped Heat Pipe with Heat Transfer to a Compressible Fluid
Made available in DSpace on 2017-07-06T18:59:39Z (GMT). No. of bitstreams: 3 Zediker_Mark_S_MS.pdf: 49651468 bytes, checksum: 6eb32f068e800580bfc0c563a07bdd23 (MD5) Zediker_Mark_S_MS_ABS.pdf: 474329 bytes, checksum: 51034f9078c08c3e89ce3b4d2735bd43 (MD5) license.txt: 4813 bytes, checksum: …
-
An Analytical Model for Oscillating Heat Pipe Performance and Experimental Testing of a Novel Helix-Shaped Design
… of a novel mechanistic model for oscillating heat pipes (OHPs), also known as pulsating heat pipes (PHPs) and the development of a novel helix-shaped OHP design inspired by insights gained from the model developed. OHPs are passive heat transfer devices with potential applications in fields …
-
NUMERICAL AND EXPERIMENTAL ANALYSIS OF HEAT PIPES WITH APPLICATION IN CONCENTRATED SOLAR POWER SYSTEMS
… conductivity of the PCM, which decreases the heat transfer rate between the heat source and PCM, which therefore prolongs the melting, or solidification process, and results in overheating the interface wall. To address this issue, heat pipes are embedded in the PCM to enhance the heat …
Page 1 of 3